Patents by Inventor Masamichi Sugimoto

Masamichi Sugimoto has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230146730
    Abstract: The invention provides biomarkers for predicting the response to checkpoint inhibitors. The inventors demonstrate that a PD-1/PD-L1 inhibitor exerts antitumor activity against tumor with low PD-L1 expression and immune-desert phenotype through blocking PD-L1 in the lymph nodes. The invention provides novel combinations of intratumoral markers for antigen cross-presenting cells and T cell chemokines which are expected to be superior efficacy-predicting biomarkers compared to existing methods.
    Type: Application
    Filed: March 19, 2021
    Publication date: May 11, 2023
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Toshiki Iwai, Masamichi Sugimoto
  • Publication number: 20230091221
    Abstract: The present invention relates to a pharmaceutical composition comprising an anti-PD-L1 antibody as an active ingredient, wherein the pharmaceutical composition is used in combination with camptothecin and/or a derivative thereof, or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: September 28, 2022
    Publication date: March 23, 2023
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Toshiki Iwai, Kaname Yamamoto, Masamichi Sugimoto
  • Publication number: 20210388090
    Abstract: The present invention relates to medicaments, treatment methods, kits, and uses for treating cancer in individuals, characterized in that a VEGF signaling inhibitor and a PD-1/PD-L1 signaling inhibitor are administered in combination, as well as VEGF signaling inhibitors, PD-1/PD-L1 signaling inhibitors, and combinations thereof.
    Type: Application
    Filed: October 17, 2019
    Publication date: December 16, 2021
    Inventors: Nobuyuki ISHIKURA, Toshiki IWAI, Masamichi SUGIMOTO
  • Publication number: 20210198364
    Abstract: The present invention relates to a pharmaceutical composition comprising an anti-PD-L1 antibody as an active ingredient, wherein the pharmaceutical composition is used in combination with camptothecin and/or a derivative thereof, or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: September 26, 2018
    Publication date: July 1, 2021
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Toshiki Iwai, Kaname Yamamoto, Masamichi Sugimoto
  • Patent number: 10118959
    Abstract: An anti-glypican-3 antibody comprising one or more amino acid substitutions introduced in the Fc region is disclosed. Preferably, in the anti-glypican-3 antibody, one or more of the amino acid residues at the positions 239, 298, 326, 330 and 332 in the Fc region are substituted with other amino acid residues. Since the Fc-modified anti-glypican-3 antibody of the invention exhibit enhanced ADCC activity, it is useful in treating cancers, such as hepatic cancer. Also disclosed are an anticancer agent comprising the anti-glypican-3 antibody of the invention and a pharmaceutically acceptable carrier, as well as a method of treating a patient with cancer comprising administering to the patient the anticancer agent of the invention.
    Type: Grant
    Filed: October 3, 2014
    Date of Patent: November 6, 2018
    Assignees: Chugai Seiyaku Kabushiki Kaisha, Xencor, Inc.
    Inventors: Gregory Alan Lazar, Bassil I. Dahiyat, Hisafumi Okabe, Masamichi Sugimoto, Shigeyuki Iijima, Izumi Sugo
  • Patent number: 9102739
    Abstract: An anti-glypican-3 antibody comprising one or more amino acid substitutions introduced in the Fc region is disclosed. Preferably, in the anti-glypican-3 antibody, one or more of the amino acid residues at the positions 239, 298, 326, 330 and 332 in the Fc region are substituted with other amino acid residues. Since the Fc-modified anti-glypican-3 antibody of the invention exhibit enhanced ADCC activity, it is useful in treating cancers, such as hepatic cancer. Also disclosed are an anticancer agent comprising the anti-glypican-3 antibody of the invention and a pharmaceutically acceptable carrier, as well as a method of treating a patient with cancer comprising administering to the patient the anticancer agent of the invention.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: August 11, 2015
    Assignees: Chugai Seiyaku Kabushiki Kaisha, Xencor, Inc.
    Inventors: Gregory Alan Lazar, Bassil I. Dahiyat, Hisafumi Okabe, Masamichi Sugimoto, Shigeyuki Iijima, Izumi Sugo
  • Publication number: 20150098941
    Abstract: An anti-glypican-3 antibody comprising one or more amino acid substitutions introduced in the Fc region is disclosed. Preferably, in the anti-glypican-3 antibody, one or more of the amino acid residues at the positions 239, 298, 326, 330 and 332 in the Fc region are substituted with other amino acid residues. Since the Fc-modified anti-glypican-3 antibody of the invention exhibit enhanced ADCC activity, it is useful in treating cancers, such as hepatic cancer. Also disclosed are an anticancer agent comprising the anti-glypican-3 antibody of the invention and a pharmaceutically acceptable carrier, as well as a method of treating a patient with cancer comprising administering to the patient the anticancer agent of the invention.
    Type: Application
    Filed: October 3, 2014
    Publication date: April 9, 2015
    Applicants: CHUGAI SEIYAKU KABUSHIKI KAISHA, XENCOR, INC.
    Inventors: Gregory Alan Lazar, Bassil I. Dahiyat, Hisafumi Okabe, Masamichi Sugimoto, Shigeyuki Iijima, Izumi Sugo
  • Patent number: 8663929
    Abstract: The present invention relates to an in-vitro immunoassay method for detecting the presence of liver cancer cells in a subject. In the method of the present invention, antigen retrieval treatment based on heat-induced epitope retrieval method and antigen retrieval treatment based on protease-induced epitope retrieval method can be combined in the detection of glypican 3 antigen expression in liver cancer tissues to thereby detect the difference in the expression level or expression pattern of the glypican 3 antigen by immunohistochemical staining method. This enables samples, which has been determined by the conventional HIER method as highly expressing glypican 3, to be graded according to the expression level of glypican 3.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: March 4, 2014
    Assignees: University of Miyazaki, Chugai Seiyaku Kabushiki Kaisha
    Inventors: Hiroaki Kataoka, Hirotake Takai, Atsuhiko Kato, Masami Suzuki, Masamichi Sugimoto
  • Patent number: 8597644
    Abstract: A method for treating psoriasis comprising an interleukin-6 (IL-6) antagonist such as, for example, an antibody against IL-6 receptor.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: December 3, 2013
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Hiroaki Ito, Kazuyuki Yoshizaki, Norihiro Nishimoto, Tadamitsu Kishimoto, Shin Shimaoka, Hidetomo Kitamura, Masamichi Sugimoto, Kenichi Akamatsu
  • Patent number: 8562990
    Abstract: A method for treating psoriatic arthritis comprising an interleukin-6 (IL-6) antagonist such as, for example, an antibody against IL-6 receptor.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: October 22, 2013
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Hiroaki Ito, Kazuyuki Yoshizaki, Norihiro Nishimoto, Tadamitsu Kishimoto, Shin Shimaoka, Hidetomo Kitamura, Masamichi Sugimoto, Kenichi Akamatsu
  • Publication number: 20110268734
    Abstract: A method for treating psoriatic arthritis comprising an interleukin-6 (IL-6) antagonist such as, for example, an antibody against IL-6 receptor.
    Type: Application
    Filed: June 15, 2011
    Publication date: November 3, 2011
    Inventors: Hiroaki Ito, Kazuyuki Yoshizaki, Norihiro Nishimoto, Tadamitsu Kishimoto, Shin Shimaoka, Hidetomo Kitamura, Masamichi Sugimoto, Kenichi Akamatsu
  • Publication number: 20110104157
    Abstract: A novel pharmaceutical composition for treating or preventing hepatocellular carcinoma and a method of treatment are provided. A pharmaceutical composition for treating or preventing liver cancer is obtained by combining a chemotherapeutic agent with an anti-glypican 3 antibody. Also disclosed is a pharmaceutical composition for treating or preventing liver cancer which comprises as an active ingredient an anti-glypican 3 antibody for use in combination with a chemotherapeutic agent, or which comprises as an active ingredient a chemotherapeutic agent for use in combination with an anti-glypican 3 antibody. Using the chemotherapeutic agent and the anti-glypican 3 antibody in combination yields better therapeutic effects than using the chemotherapeutic agent alone, and mitigates side effects that arise from liver cancer treatment with the chemotherapeutic agent.
    Type: Application
    Filed: March 19, 2009
    Publication date: May 5, 2011
    Applicant: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Yasuko Kinoshita, Masamichi Sugimoto, Takahiro Ishiguro
  • Publication number: 20110091907
    Abstract: The present invention relates to an in-vitro immunoassay method for detecting the presence of liver cancer cells in a subject. In the method of the present invention, antigen retrieval treatment based on heat-induced epitope retrieval method and antigen retrieval treatment based on protease-induced epitope retrieval method can be combined in the detection of glypican 3 antigen expression in liver cancer tissues to thereby detect the difference in the expression level or expression pattern of the glypican 3 antigen by immunohistochemical staining method. This enables samples, which has been determined by the conventional HIER method as highly expressing glypican 3, to be graded according to the expression level of glypican 3.
    Type: Application
    Filed: March 16, 2009
    Publication date: April 21, 2011
    Applicants: University of Miyazaki, Chugai Seiyaku Kabushiki Kaisha
    Inventors: Hiroaki Kataoka, Hirotake Takai, Atsuhiko Kato, Masami Suzuki, Masamichi Sugimoto
  • Publication number: 20110033452
    Abstract: An anti-glypican 3 antibody with modified sugar chains, more specifically, an anti-glypican 3 antibody lacking fucose is provided. The anti-glypican 3 antibody with modified sugar chains of the present invention may be produced by a process comprising introducing a nucleic acid encoding an anti-glypican 3 antibody into host cells with reduced fucose addition capability, such as YB2/0 cells and cells lacking a fucose transporter. The anti-glypican 3 antibody with modified sugar chains of the present invention has a high level of cytotoxic activity and therefore is useful as a cell growth inhibitor such as an anticancer agent.
    Type: Application
    Filed: August 9, 2010
    Publication date: February 10, 2011
    Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHA
    Inventors: Kiyotaka Nakano, Izumi Sugo, Masamichi Sugimoto, Takahiro Ishiguro, Megumi Tanaka, Shigeyuki Iijima
  • Patent number: 7871613
    Abstract: The present invention provides an anti-cancer agent comprising anti-glypican 3 antibody wherein the anti-cancer agent is administered after a cancer treatment, Preferably, after a cancer treatment is after a treatment for liver cancer, and the treatment for liver cancer is in particular a resection of liver cancer cells. The anti-cancer agent according to the present invention is preferably administered if glypican 3 is expressed in the resected liver cancer cells. The anti-glypican 3 antibody is preferably a monoclonal antibody. The anti-cancer agent according to the present invention is useful for preventing cancer and for preventing the recurrence of cancer.
    Type: Grant
    Filed: August 23, 2005
    Date of Patent: January 18, 2011
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Yasuko Kinoshita, Masamichi Sugimoto, Hisafumi Okabe
  • Patent number: 7867734
    Abstract: An anti-glypican 3 antibody with modified sugar chains, more specifically, an anti-glypican 3 antibody lacking fucose is provided. The anti-glypican 3 antibody with modified sugar chains of the present invention may be produced by a process comprising introducing a nucleic acid encoding an anti-glypican 3 antibody into host cells with reduced fucose addition capability, such as YB2/0 cells and cells lacking a fucose transporter. The anti-glypican 3 antibody with modified sugar chains of the present invention has a high level of cytotoxic activity and therefore is useful as a cell growth inhibitor such as an anticancer agent.
    Type: Grant
    Filed: October 26, 2005
    Date of Patent: January 11, 2011
    Assignee: Chugai Seiyaku Kabushiki Kaisha
    Inventors: Kiyotaka Nakano, Izumi Sugo, Masamichi Sugimoto, Takahiro Ishiguro, Megumi Tanaka, Shigeyuki Iijima
  • Publication number: 20090061485
    Abstract: The present invention relates to a method of producing a recombinant protein, particularly an antibody, using a cell in which the function of a fucose transporter is inhibited, and it also provides a cell in which the expression of fucose transporter genes on both homologous chromosomes is artificially suppressed.
    Type: Application
    Filed: December 22, 2004
    Publication date: March 5, 2009
    Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHA
    Inventors: Masayuki Tsuchiya, Shigeyuki Iijima, Izumi Sugo, Yasuo Sekimori, Kiyoshi Habu, Masamichi Sugimoto
  • Publication number: 20080267979
    Abstract: An anti-glypican-3 antibody comprising one or more amino acid substitutions introduced in the Fc region is disclosed. Preferably, in the anti-glypican-3 antibody, one or more of the amino acid residues at the positions 239, 298, 326, 330 and 332 in the Fc region are substituted with other amino acid residues. Since the Fc-modified anti-glypican-3 antibody of the invention exhibit enhanced ADCC activity, it is useful in treating cancers, such as hepatic cancer. Also disclosed are an anticancer agent comprising the anti-glypican-3 antibody of the invention and a pharmaceutically acceptable carrier, as well as a method of treating a patient with cancer comprising administering to the patient the anticancer agent of the invention.
    Type: Application
    Filed: October 11, 2006
    Publication date: October 30, 2008
    Inventors: Gregory Alan Lazar, Bassil I. Dahiyat, Hisafumi Okabe, Masamichi Sugimoto, Shigeyuki Iijima, Izumi Sugo
  • Publication number: 20080166756
    Abstract: The present invention relates to a method of producing a recombinant protein particularly an antibody using a cell in which the function of a fucose transporter is inhibited. According to the present invention, a cell in which the expression of fucose transporter genes on both homologous chromosomes is artificially suppressed is provided.
    Type: Application
    Filed: October 26, 2005
    Publication date: July 10, 2008
    Inventors: Masayuki Tsuchiya, Shigeyuki IIjima, Izumi Sugo, Yasuo Sekimori, Kiyoshi Habu, Masamichi Sugimoto
  • Publication number: 20080124330
    Abstract: An anti-glypican 3 antibody with modified sugar chains, more specifically, an anti-glypican 3 antibody lacking fucose is provided. The anti-glypican 3 antibody with modified sugar chains of the present invention may be produced by a process comprising introducing a nucleic acid encoding an anti-glypican 3 antibody into host cells with reduced fucose addition capability, such as YB2/0 cells and cells lacking a fucose transporter. The anti-glypican 3 antibody with modified sugar chains of the present invention has a high level of cytotoxic activity and therefore is useful as a cell growth inhibitor such as an anticancer agent.
    Type: Application
    Filed: October 26, 2005
    Publication date: May 29, 2008
    Applicant: CHUGAI SEIYAKU KABUSHIKI KAISHA
    Inventors: Kiyotaka Nakano, Izumi Sugo, Masamichi Sugimoto, Takahiro Ishiguro, Megumi Tanaka, Shigeyuki Iijima